Whisk the eggs in shallow bowl, but medium size bowl.
Add milk and cinnamon to eggs and mix well.
Place as many pieces of brioche bread that will fit in the dish and turn them to cover both sides.
Heat a skillet or griddle to medium low heat.
Grease the pan with butter or non-stick cooking spray.
Place as many pieces of coated bread on the pan and toast for approx. 3-4 minutes on each side so that they turn a golden brown color. Once done, remove from pan and keep warm.
Coat another batch of bread in the egg mixture.
Add more butter or non-stick cooking spray, if needed.
Toast the new batch of coated bread until golden brown. Remove from heat, when cooked.
Repeat this process until all of the bread has been cooked.